A Generalization of Hansen's Theorem
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Let ABC be a triangle and H its orthocenter. Let and R be the radii of the incircle and circumcircle. Let , , and be the radii of the excircles opposite A, B, and C. Then .
Contributed by: Jay Warendorff (March 2011)
After work by: Amy Bell
Open content licensed under CC BY-NC-SA
"A Generalization of Hansen's Theorem"
Wolfram Demonstrations Project
Published: March 7 2011